Liese, the last Trinity Seven, appears in the Eternal Library bearing a demon lord seal, making her a demon lord candidate, as well. She tries to entice Arata to join the evil mage side to help save Hijiri, and kisses Arata while he's unsure what to do. Arata has his magic stolen from him, and Liese decides to attack the school.
The magic you have that makes everyone naked
Diese Magie, die jeden nackt macht
Ese poder que desnuda a todos
Ese poder que desnuda a todos
Ton sort de strip-tease
et ta matérialisation de pistolet
La magia che hai di denudare tutti
Essa magia que deixa 
todo mundo sem roupa